blob: 3bf0631b5d56d8a76a17b9f70e3fa1cc4b9ee2f0 [file] [log] [blame]
David Teiglandb3b94fa2006-01-16 16:50:04 +00001/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
Bob Petersoncf45b752008-01-31 10:31:39 -06003 * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
David Teiglandb3b94fa2006-01-16 16:50:04 +00004 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
Steven Whitehousee9fc2aa2006-09-01 11:05:15 -04007 * of the GNU General Public License version 2.
David Teiglandb3b94fa2006-01-16 16:50:04 +00008 */
9
David Teiglandb3b94fa2006-01-16 16:50:04 +000010#include <linux/spinlock.h>
11#include <linux/completion.h>
12#include <linux/buffer_head.h>
Steven Whitehouse5c676f62006-02-27 17:23:27 -050013#include <linux/gfs2_ondisk.h>
Steven Whitehouse6802e342008-05-21 17:03:22 +010014#include <linux/bio.h>
Steven Whitehousec65f7fb2009-10-02 11:54:39 +010015#include <linux/posix_acl.h>
David Teiglandb3b94fa2006-01-16 16:50:04 +000016
17#include "gfs2.h"
Steven Whitehouse5c676f62006-02-27 17:23:27 -050018#include "incore.h"
David Teiglandb3b94fa2006-01-16 16:50:04 +000019#include "bmap.h"
20#include "glock.h"
21#include "glops.h"
22#include "inode.h"
23#include "log.h"
24#include "meta_io.h"
David Teiglandb3b94fa2006-01-16 16:50:04 +000025#include "recovery.h"
26#include "rgrp.h"
Steven Whitehouse5c676f62006-02-27 17:23:27 -050027#include "util.h"
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040028#include "trans.h"
Steven Whitehouse17d539f2011-06-15 10:29:37 +010029#include "dir.h"
David Teiglandb3b94fa2006-01-16 16:50:04 +000030
Steven Whitehouse75549182011-08-02 13:09:36 +010031static void gfs2_ail_error(struct gfs2_glock *gl, const struct buffer_head *bh)
32{
33 fs_err(gl->gl_sbd, "AIL buffer %p: blocknr %llu state 0x%08lx mapping %p page state 0x%lx\n",
34 bh, (unsigned long long)bh->b_blocknr, bh->b_state,
35 bh->b_page->mapping, bh->b_page->flags);
36 fs_err(gl->gl_sbd, "AIL glock %u:%llu mapping %p\n",
37 gl->gl_name.ln_type, gl->gl_name.ln_number,
38 gfs2_glock2aspace(gl));
39 gfs2_lm_withdraw(gl->gl_sbd, "AIL error\n");
40}
41
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040042/**
Steven Whitehousedba898b2011-04-14 09:54:02 +010043 * __gfs2_ail_flush - remove all buffers for a given lock from the AIL
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040044 * @gl: the glock
Steven Whitehouseb5b24d72011-09-07 10:33:25 +010045 * @fsync: set when called from fsync (not all buffers will be clean)
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040046 *
47 * None of the buffers should be dirty, locked, or pinned.
48 */
49
Benjamin Marzinski1bc333f2013-07-26 17:09:33 -050050static void __gfs2_ail_flush(struct gfs2_glock *gl, bool fsync,
51 unsigned int nr_revokes)
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040052{
53 struct gfs2_sbd *sdp = gl->gl_sbd;
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040054 struct list_head *head = &gl->gl_ail_list;
Steven Whitehouseb5b24d72011-09-07 10:33:25 +010055 struct gfs2_bufdata *bd, *tmp;
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040056 struct buffer_head *bh;
Steven Whitehouseb5b24d72011-09-07 10:33:25 +010057 const unsigned long b_state = (1UL << BH_Dirty)|(1UL << BH_Pinned)|(1UL << BH_Lock);
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040058
Steven Whitehouseb5b24d72011-09-07 10:33:25 +010059 gfs2_log_lock(sdp);
Dave Chinnerd6a079e2011-03-11 11:52:25 +000060 spin_lock(&sdp->sd_ail_lock);
Benjamin Marzinski1bc333f2013-07-26 17:09:33 -050061 list_for_each_entry_safe_reverse(bd, tmp, head, bd_ail_gl_list) {
62 if (nr_revokes == 0)
63 break;
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040064 bh = bd->bd_bh;
Steven Whitehouseb5b24d72011-09-07 10:33:25 +010065 if (bh->b_state & b_state) {
66 if (fsync)
67 continue;
Steven Whitehouse75549182011-08-02 13:09:36 +010068 gfs2_ail_error(gl, bh);
Steven Whitehouseb5b24d72011-09-07 10:33:25 +010069 }
Steven Whitehouse1ad38c42007-09-03 11:01:33 +010070 gfs2_trans_add_revoke(sdp, bd);
Benjamin Marzinski1bc333f2013-07-26 17:09:33 -050071 nr_revokes--;
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040072 }
Steven Whitehouse8eae1ca2012-10-15 10:57:02 +010073 GLOCK_BUG_ON(gl, !fsync && atomic_read(&gl->gl_ail_count));
Dave Chinnerd6a079e2011-03-11 11:52:25 +000074 spin_unlock(&sdp->sd_ail_lock);
Steven Whitehouseb5b24d72011-09-07 10:33:25 +010075 gfs2_log_unlock(sdp);
Steven Whitehousedba898b2011-04-14 09:54:02 +010076}
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040077
Steven Whitehousedba898b2011-04-14 09:54:02 +010078
79static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
80{
81 struct gfs2_sbd *sdp = gl->gl_sbd;
82 struct gfs2_trans tr;
83
84 memset(&tr, 0, sizeof(tr));
85 tr.tr_revokes = atomic_read(&gl->gl_ail_count);
86
87 if (!tr.tr_revokes)
88 return;
89
90 /* A shortened, inline version of gfs2_trans_begin() */
91 tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64));
92 tr.tr_ip = (unsigned long)__builtin_return_address(0);
Eric Sandeena0b4df22012-09-17 21:50:31 -050093 sb_start_intwrite(sdp->sd_vfs);
Steven Whitehousedba898b2011-04-14 09:54:02 +010094 gfs2_log_reserve(sdp, tr.tr_reserved);
Steven Whitehouse8eae1ca2012-10-15 10:57:02 +010095 WARN_ON_ONCE(current->journal_info);
Steven Whitehousedba898b2011-04-14 09:54:02 +010096 current->journal_info = &tr;
97
Benjamin Marzinski1bc333f2013-07-26 17:09:33 -050098 __gfs2_ail_flush(gl, 0, tr.tr_revokes);
Steven Whitehousedba898b2011-04-14 09:54:02 +010099
100 gfs2_trans_end(sdp);
101 gfs2_log_flush(sdp, NULL);
102}
103
Steven Whitehouseb5b24d72011-09-07 10:33:25 +0100104void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync)
Steven Whitehousedba898b2011-04-14 09:54:02 +0100105{
106 struct gfs2_sbd *sdp = gl->gl_sbd;
107 unsigned int revokes = atomic_read(&gl->gl_ail_count);
Benjamin Marzinski1bc333f2013-07-26 17:09:33 -0500108 unsigned int max_revokes = (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_log_descriptor)) / sizeof(u64);
Steven Whitehousedba898b2011-04-14 09:54:02 +0100109 int ret;
110
111 if (!revokes)
112 return;
113
Benjamin Marzinski1bc333f2013-07-26 17:09:33 -0500114 while (revokes > max_revokes)
115 max_revokes += (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header)) / sizeof(u64);
116
117 ret = gfs2_trans_begin(sdp, 0, max_revokes);
Steven Whitehousedba898b2011-04-14 09:54:02 +0100118 if (ret)
119 return;
Benjamin Marzinski1bc333f2013-07-26 17:09:33 -0500120 __gfs2_ail_flush(gl, fsync, max_revokes);
Steven Whitehouseddacfaf2006-10-03 11:10:41 -0400121 gfs2_trans_end(sdp);
122 gfs2_log_flush(sdp, NULL);
123}
Steven Whitehouseba7f7292006-07-26 11:27:10 -0400124
125/**
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000126 * rgrp_go_sync - sync out the metadata for this glock
David Teiglandb3b94fa2006-01-16 16:50:04 +0000127 * @gl: the glock
David Teiglandb3b94fa2006-01-16 16:50:04 +0000128 *
129 * Called when demoting or unlocking an EX glock. We must flush
130 * to disk all dirty buffers/pages relating to this glock, and must not
131 * not return to caller to demote/unlock the glock until I/O is complete.
132 */
133
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000134static void rgrp_go_sync(struct gfs2_glock *gl)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000135{
Steven Whitehouse70d4ee92013-12-06 16:19:54 +0000136 struct gfs2_sbd *sdp = gl->gl_sbd;
137 struct address_space *mapping = &sdp->sd_aspace;
Steven Whitehouse8339ee52011-08-31 16:38:29 +0100138 struct gfs2_rgrpd *rgd;
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000139 int error;
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500140
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000141 if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
142 return;
Steven Whitehouse8eae1ca2012-10-15 10:57:02 +0100143 GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000144
Steven Whitehouse70d4ee92013-12-06 16:19:54 +0000145 gfs2_log_flush(sdp, gl);
146 filemap_fdatawrite_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
147 error = filemap_fdatawait_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
148 mapping_set_error(mapping, error);
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000149 gfs2_ail_empty_gl(gl);
Bob Peterson7c9ca622011-08-31 09:53:19 +0100150
Steven Whitehouse8339ee52011-08-31 16:38:29 +0100151 spin_lock(&gl->gl_spin);
152 rgd = gl->gl_object;
153 if (rgd)
154 gfs2_free_clones(rgd);
155 spin_unlock(&gl->gl_spin);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000156}
157
158/**
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000159 * rgrp_go_inval - invalidate the metadata for this glock
David Teiglandb3b94fa2006-01-16 16:50:04 +0000160 * @gl: the glock
161 * @flags:
162 *
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000163 * We never used LM_ST_DEFERRED with resource groups, so that we
164 * should always see the metadata flag set here.
165 *
David Teiglandb3b94fa2006-01-16 16:50:04 +0000166 */
167
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000168static void rgrp_go_inval(struct gfs2_glock *gl, int flags)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000169{
Steven Whitehouse70d4ee92013-12-06 16:19:54 +0000170 struct gfs2_sbd *sdp = gl->gl_sbd;
171 struct address_space *mapping = &sdp->sd_aspace;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000172
Steven Whitehouse8eae1ca2012-10-15 10:57:02 +0100173 WARN_ON_ONCE(!(flags & DIO_METADATA));
Steven Whitehouse70d4ee92013-12-06 16:19:54 +0000174 gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count));
Steven Whitehouse7005c3e2013-12-06 10:16:14 +0000175 truncate_inode_pages_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000176
177 if (gl->gl_object) {
Bob Petersoncf45b752008-01-31 10:31:39 -0600178 struct gfs2_rgrpd *rgd = (struct gfs2_rgrpd *)gl->gl_object;
Bob Petersoncf45b752008-01-31 10:31:39 -0600179 rgd->rd_flags &= ~GFS2_RDF_UPTODATE;
180 }
David Teiglandb3b94fa2006-01-16 16:50:04 +0000181}
182
183/**
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500184 * inode_go_sync - Sync the dirty data and/or metadata for an inode glock
185 * @gl: the glock protecting the inode
186 *
187 */
188
189static void inode_go_sync(struct gfs2_glock *gl)
190{
191 struct gfs2_inode *ip = gl->gl_object;
Steven Whitehouse009d8512009-12-08 12:12:13 +0000192 struct address_space *metamapping = gfs2_glock2aspace(gl);
Steven Whitehouse3042a2c2007-11-02 08:39:34 +0000193 int error;
194
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500195 if (ip && !S_ISREG(ip->i_inode.i_mode))
196 ip = NULL;
Steven Whitehouse582d2f72013-12-19 11:04:14 +0000197 if (ip) {
198 if (test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags))
199 unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0);
200 inode_dio_wait(&ip->i_inode);
201 }
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000202 if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
203 return;
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500204
Steven Whitehouse8eae1ca2012-10-15 10:57:02 +0100205 GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000206
207 gfs2_log_flush(gl->gl_sbd, gl);
208 filemap_fdatawrite(metamapping);
209 if (ip) {
210 struct address_space *mapping = ip->i_inode.i_mapping;
211 filemap_fdatawrite(mapping);
212 error = filemap_fdatawait(mapping);
213 mapping_set_error(mapping, error);
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500214 }
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000215 error = filemap_fdatawait(metamapping);
216 mapping_set_error(metamapping, error);
217 gfs2_ail_empty_gl(gl);
Steven Whitehouse52fcd112009-04-20 08:58:45 +0100218 /*
219 * Writeback of the data mapping may cause the dirty flag to be set
220 * so we have to clear it again here.
221 */
222 smp_mb__before_clear_bit();
223 clear_bit(GLF_DIRTY, &gl->gl_flags);
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500224}
225
226/**
David Teiglandb3b94fa2006-01-16 16:50:04 +0000227 * inode_go_inval - prepare a inode glock to be released
228 * @gl: the glock
229 * @flags:
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000230 *
231 * Normally we invlidate everything, but if we are moving into
232 * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we
233 * can keep hold of the metadata, since it won't have changed.
David Teiglandb3b94fa2006-01-16 16:50:04 +0000234 *
235 */
236
237static void inode_go_inval(struct gfs2_glock *gl, int flags)
238{
Steven Whitehouseb0041572006-11-23 10:51:34 -0500239 struct gfs2_inode *ip = gl->gl_object;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000240
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000241 gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count));
242
243 if (flags & DIO_METADATA) {
Steven Whitehouse009d8512009-12-08 12:12:13 +0000244 struct address_space *mapping = gfs2_glock2aspace(gl);
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000245 truncate_inode_pages(mapping, 0);
Steven Whitehousec65f7fb2009-10-02 11:54:39 +0100246 if (ip) {
Steven Whitehouseb0041572006-11-23 10:51:34 -0500247 set_bit(GIF_INVALID, &ip->i_flags);
Steven Whitehousec65f7fb2009-10-02 11:54:39 +0100248 forget_all_cached_acls(&ip->i_inode);
Steven Whitehouse17d539f2011-06-15 10:29:37 +0100249 gfs2_dir_hash_inval(ip);
Steven Whitehousec65f7fb2009-10-02 11:54:39 +0100250 }
David Teiglandb3b94fa2006-01-16 16:50:04 +0000251 }
Steven Whitehouseb0041572006-11-23 10:51:34 -0500252
Benjamin Marzinski1ce53362011-06-13 14:27:40 -0500253 if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) {
254 gfs2_log_flush(gl->gl_sbd, NULL);
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000255 gl->gl_sbd->sd_rindex_uptodate = 0;
Benjamin Marzinski1ce53362011-06-13 14:27:40 -0500256 }
Steven Whitehouse3cc3f712007-10-15 15:40:33 +0100257 if (ip && S_ISREG(ip->i_inode.i_mode))
Steven Whitehouseb0041572006-11-23 10:51:34 -0500258 truncate_inode_pages(ip->i_inode.i_mapping, 0);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000259}
260
261/**
262 * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock
263 * @gl: the glock
264 *
265 * Returns: 1 if it's ok
266 */
267
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000268static int inode_go_demote_ok(const struct gfs2_glock *gl)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000269{
270 struct gfs2_sbd *sdp = gl->gl_sbd;
Steven Whitehousebc015cb2011-01-19 09:30:01 +0000271 struct gfs2_holder *gh;
272
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000273 if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object)
274 return 0;
Steven Whitehousebc015cb2011-01-19 09:30:01 +0000275
276 if (!list_empty(&gl->gl_holders)) {
277 gh = list_entry(gl->gl_holders.next, struct gfs2_holder, gh_list);
278 if (gh->gh_list.next != &gl->gl_holders)
279 return 0;
280 }
281
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000282 return 1;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000283}
284
285/**
Steven Whitehoused4b2cf12011-05-09 13:49:59 +0100286 * gfs2_set_nlink - Set the inode's link count based on on-disk info
287 * @inode: The inode in question
288 * @nlink: The link count
289 *
290 * If the link count has hit zero, it must never be raised, whatever the
291 * on-disk inode might say. When new struct inodes are created the link
292 * count is set to 1, so that we can safely use this test even when reading
293 * in on disk information for the first time.
294 */
295
296static void gfs2_set_nlink(struct inode *inode, u32 nlink)
297{
298 /*
299 * We will need to review setting the nlink count here in the
300 * light of the forthcoming ro bind mount work. This is a reminder
301 * to do that.
302 */
303 if ((inode->i_nlink != nlink) && (inode->i_nlink != 0)) {
304 if (nlink == 0)
305 clear_nlink(inode);
306 else
Miklos Szeredibfe86842011-10-28 14:13:29 +0200307 set_nlink(inode, nlink);
Steven Whitehoused4b2cf12011-05-09 13:49:59 +0100308 }
309}
310
311static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
312{
313 const struct gfs2_dinode *str = buf;
314 struct timespec atime;
315 u16 height, depth;
316
317 if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
318 goto corrupt;
319 ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
320 ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
321 ip->i_inode.i_rdev = 0;
322 switch (ip->i_inode.i_mode & S_IFMT) {
323 case S_IFBLK:
324 case S_IFCHR:
325 ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
326 be32_to_cpu(str->di_minor));
327 break;
328 };
329
Eric W. Biedermand0546422013-01-31 22:08:10 -0800330 i_uid_write(&ip->i_inode, be32_to_cpu(str->di_uid));
331 i_gid_write(&ip->i_inode, be32_to_cpu(str->di_gid));
Steven Whitehoused4b2cf12011-05-09 13:49:59 +0100332 gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink));
333 i_size_write(&ip->i_inode, be64_to_cpu(str->di_size));
334 gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
335 atime.tv_sec = be64_to_cpu(str->di_atime);
336 atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
337 if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0)
338 ip->i_inode.i_atime = atime;
339 ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
340 ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
341 ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
342 ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
343
344 ip->i_goal = be64_to_cpu(str->di_goal_meta);
345 ip->i_generation = be64_to_cpu(str->di_generation);
346
347 ip->i_diskflags = be32_to_cpu(str->di_flags);
Steven Whitehouse9964afb2011-06-16 14:06:55 +0100348 ip->i_eattr = be64_to_cpu(str->di_eattr);
349 /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */
Steven Whitehoused4b2cf12011-05-09 13:49:59 +0100350 gfs2_set_inode_flags(&ip->i_inode);
351 height = be16_to_cpu(str->di_height);
352 if (unlikely(height > GFS2_MAX_META_HEIGHT))
353 goto corrupt;
354 ip->i_height = (u8)height;
355
356 depth = be16_to_cpu(str->di_depth);
357 if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
358 goto corrupt;
359 ip->i_depth = (u8)depth;
360 ip->i_entries = be32_to_cpu(str->di_entries);
361
Steven Whitehoused4b2cf12011-05-09 13:49:59 +0100362 if (S_ISREG(ip->i_inode.i_mode))
363 gfs2_set_aops(&ip->i_inode);
364
365 return 0;
366corrupt:
367 gfs2_consist_inode(ip);
368 return -EIO;
369}
370
371/**
372 * gfs2_inode_refresh - Refresh the incore copy of the dinode
373 * @ip: The GFS2 inode
374 *
375 * Returns: errno
376 */
377
378int gfs2_inode_refresh(struct gfs2_inode *ip)
379{
380 struct buffer_head *dibh;
381 int error;
382
383 error = gfs2_meta_inode_buffer(ip, &dibh);
384 if (error)
385 return error;
386
Steven Whitehoused4b2cf12011-05-09 13:49:59 +0100387 error = gfs2_dinode_in(ip, dibh->b_data);
388 brelse(dibh);
389 clear_bit(GIF_INVALID, &ip->i_flags);
390
391 return error;
392}
393
394/**
David Teiglandb3b94fa2006-01-16 16:50:04 +0000395 * inode_go_lock - operation done after an inode lock is locked by a process
396 * @gl: the glock
397 * @flags:
398 *
399 * Returns: errno
400 */
401
402static int inode_go_lock(struct gfs2_holder *gh)
403{
404 struct gfs2_glock *gl = gh->gh_gl;
Steven Whitehouse813e0c42008-11-18 13:38:48 +0000405 struct gfs2_sbd *sdp = gl->gl_sbd;
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500406 struct gfs2_inode *ip = gl->gl_object;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000407 int error = 0;
408
Bob Peterson091806ed2008-04-29 12:35:48 -0500409 if (!ip || (gh->gh_flags & GL_SKIP))
David Teiglandb3b94fa2006-01-16 16:50:04 +0000410 return 0;
411
Steven Whitehousebfded272006-11-01 16:05:38 -0500412 if (test_bit(GIF_INVALID, &ip->i_flags)) {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000413 error = gfs2_inode_refresh(ip);
414 if (error)
415 return error;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000416 }
417
Steven Whitehouse582d2f72013-12-19 11:04:14 +0000418 if (gh->gh_state != LM_ST_DEFERRED)
419 inode_dio_wait(&ip->i_inode);
420
Steven Whitehouse383f01f2008-11-04 10:05:22 +0000421 if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) &&
David Teiglandb3b94fa2006-01-16 16:50:04 +0000422 (gl->gl_state == LM_ST_EXCLUSIVE) &&
Steven Whitehouse813e0c42008-11-18 13:38:48 +0000423 (gh->gh_state == LM_ST_EXCLUSIVE)) {
424 spin_lock(&sdp->sd_trunc_lock);
425 if (list_empty(&ip->i_trunc_list))
426 list_add(&sdp->sd_trunc_list, &ip->i_trunc_list);
427 spin_unlock(&sdp->sd_trunc_lock);
428 wake_up(&sdp->sd_quota_wait);
429 return 1;
430 }
David Teiglandb3b94fa2006-01-16 16:50:04 +0000431
432 return error;
433}
434
435/**
Steven Whitehouse6802e342008-05-21 17:03:22 +0100436 * inode_go_dump - print information about an inode
437 * @seq: The iterator
438 * @ip: the inode
439 *
Steven Whitehouse6802e342008-05-21 17:03:22 +0100440 */
441
Steven Whitehouseac3beb62014-01-16 10:31:13 +0000442static void inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
Steven Whitehouse6802e342008-05-21 17:03:22 +0100443{
444 const struct gfs2_inode *ip = gl->gl_object;
445 if (ip == NULL)
Steven Whitehouseac3beb62014-01-16 10:31:13 +0000446 return;
Steven Whitehousea2e0f792010-08-11 09:53:11 +0100447 gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n",
Steven Whitehouse6802e342008-05-21 17:03:22 +0100448 (unsigned long long)ip->i_no_formal_ino,
449 (unsigned long long)ip->i_no_addr,
Steven Whitehousefa75ced2008-11-10 10:10:12 +0000450 IF2DT(ip->i_inode.i_mode), ip->i_flags,
451 (unsigned int)ip->i_diskflags,
Steven Whitehousea2e0f792010-08-11 09:53:11 +0100452 (unsigned long long)i_size_read(&ip->i_inode));
Steven Whitehouse6802e342008-05-21 17:03:22 +0100453}
454
455/**
Steven Whitehouse3042a2c2007-11-02 08:39:34 +0000456 * trans_go_sync - promote/demote the transaction glock
David Teiglandb3b94fa2006-01-16 16:50:04 +0000457 * @gl: the glock
458 * @state: the requested state
459 * @flags:
460 *
461 */
462
Steven Whitehouse3042a2c2007-11-02 08:39:34 +0000463static void trans_go_sync(struct gfs2_glock *gl)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000464{
465 struct gfs2_sbd *sdp = gl->gl_sbd;
466
467 if (gl->gl_state != LM_ST_UNLOCKED &&
468 test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
469 gfs2_meta_syncfs(sdp);
470 gfs2_log_shutdown(sdp);
471 }
David Teiglandb3b94fa2006-01-16 16:50:04 +0000472}
473
474/**
475 * trans_go_xmote_bh - After promoting/demoting the transaction glock
476 * @gl: the glock
477 *
478 */
479
Steven Whitehouse6802e342008-05-21 17:03:22 +0100480static int trans_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000481{
482 struct gfs2_sbd *sdp = gl->gl_sbd;
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400483 struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500484 struct gfs2_glock *j_gl = ip->i_gl;
Al Viro55167622006-10-13 21:47:13 -0400485 struct gfs2_log_header_host head;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000486 int error;
487
Steven Whitehouse6802e342008-05-21 17:03:22 +0100488 if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
Steven Whitehouse1a14d3a2006-11-20 10:37:45 -0500489 j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000490
491 error = gfs2_find_jhead(sdp->sd_jdesc, &head);
492 if (error)
493 gfs2_consist(sdp);
494 if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT))
495 gfs2_consist(sdp);
496
497 /* Initialize some head of the log stuff */
498 if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) {
499 sdp->sd_log_sequence = head.lh_sequence + 1;
500 gfs2_log_pointers_init(sdp, head.lh_blkno);
501 }
502 }
Steven Whitehouse6802e342008-05-21 17:03:22 +0100503 return 0;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000504}
505
506/**
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000507 * trans_go_demote_ok
508 * @gl: the glock
509 *
510 * Always returns 0
511 */
512
513static int trans_go_demote_ok(const struct gfs2_glock *gl)
514{
515 return 0;
516}
517
Benjamin Marzinskib94a1702009-07-23 18:52:34 -0500518/**
519 * iopen_go_callback - schedule the dcache entry for the inode to be deleted
520 * @gl: the glock
521 *
522 * gl_spin lock is held while calling this
523 */
Steven Whitehouse81ffbf62013-04-10 10:26:55 +0100524static void iopen_go_callback(struct gfs2_glock *gl, bool remote)
Benjamin Marzinskib94a1702009-07-23 18:52:34 -0500525{
526 struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object;
Steven Whitehouse001e8e82011-03-30 14:17:51 +0100527 struct gfs2_sbd *sdp = gl->gl_sbd;
528
Steven Whitehouse81ffbf62013-04-10 10:26:55 +0100529 if (!remote || (sdp->sd_vfs->s_flags & MS_RDONLY))
Steven Whitehouse001e8e82011-03-30 14:17:51 +0100530 return;
Benjamin Marzinskib94a1702009-07-23 18:52:34 -0500531
532 if (gl->gl_demote_state == LM_ST_UNLOCKED &&
Steven Whitehouse009d8512009-12-08 12:12:13 +0000533 gl->gl_state == LM_ST_SHARED && ip) {
Steven Whitehousee66cf162013-10-15 15:18:08 +0100534 gl->gl_lockref.count++;
Benjamin Marzinskib94a1702009-07-23 18:52:34 -0500535 if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0)
Steven Whitehousee66cf162013-10-15 15:18:08 +0100536 gl->gl_lockref.count--;
Benjamin Marzinskib94a1702009-07-23 18:52:34 -0500537 }
538}
539
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400540const struct gfs2_glock_operations gfs2_meta_glops = {
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400541 .go_type = LM_TYPE_META,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000542};
543
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400544const struct gfs2_glock_operations gfs2_inode_glops = {
Bob Peterson06dfc302012-10-24 14:41:05 -0400545 .go_sync = inode_go_sync,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000546 .go_inval = inode_go_inval,
547 .go_demote_ok = inode_go_demote_ok,
548 .go_lock = inode_go_lock,
Steven Whitehouse6802e342008-05-21 17:03:22 +0100549 .go_dump = inode_go_dump,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400550 .go_type = LM_TYPE_INODE,
Steven Whitehouse009d8512009-12-08 12:12:13 +0000551 .go_flags = GLOF_ASPACE,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000552};
553
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400554const struct gfs2_glock_operations gfs2_rgrp_glops = {
Bob Peterson06dfc302012-10-24 14:41:05 -0400555 .go_sync = rgrp_go_sync,
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000556 .go_inval = rgrp_go_inval,
Bob Peterson7c9ca622011-08-31 09:53:19 +0100557 .go_lock = gfs2_rgrp_go_lock,
558 .go_unlock = gfs2_rgrp_go_unlock,
Steven Whitehouse09010972009-05-20 10:48:47 +0100559 .go_dump = gfs2_rgrp_dump,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400560 .go_type = LM_TYPE_RGRP,
Steven Whitehouse70d4ee92013-12-06 16:19:54 +0000561 .go_flags = GLOF_LVB,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000562};
563
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400564const struct gfs2_glock_operations gfs2_trans_glops = {
Bob Peterson06dfc302012-10-24 14:41:05 -0400565 .go_sync = trans_go_sync,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000566 .go_xmote_bh = trans_go_xmote_bh,
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000567 .go_demote_ok = trans_go_demote_ok,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400568 .go_type = LM_TYPE_NONDISK,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000569};
570
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400571const struct gfs2_glock_operations gfs2_iopen_glops = {
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400572 .go_type = LM_TYPE_IOPEN,
Benjamin Marzinskib94a1702009-07-23 18:52:34 -0500573 .go_callback = iopen_go_callback,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000574};
575
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400576const struct gfs2_glock_operations gfs2_flock_glops = {
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400577 .go_type = LM_TYPE_FLOCK,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000578};
579
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400580const struct gfs2_glock_operations gfs2_nondisk_glops = {
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400581 .go_type = LM_TYPE_NONDISK,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000582};
583
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400584const struct gfs2_glock_operations gfs2_quota_glops = {
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400585 .go_type = LM_TYPE_QUOTA,
David Teiglanddba2d702012-11-14 13:46:53 -0500586 .go_flags = GLOF_LVB,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000587};
588
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400589const struct gfs2_glock_operations gfs2_journal_glops = {
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400590 .go_type = LM_TYPE_JOURNAL,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000591};
592
Steven Whitehouse64d576b2009-02-12 13:31:58 +0000593const struct gfs2_glock_operations *gfs2_glops_list[] = {
594 [LM_TYPE_META] = &gfs2_meta_glops,
595 [LM_TYPE_INODE] = &gfs2_inode_glops,
596 [LM_TYPE_RGRP] = &gfs2_rgrp_glops,
Steven Whitehouse64d576b2009-02-12 13:31:58 +0000597 [LM_TYPE_IOPEN] = &gfs2_iopen_glops,
598 [LM_TYPE_FLOCK] = &gfs2_flock_glops,
599 [LM_TYPE_NONDISK] = &gfs2_nondisk_glops,
600 [LM_TYPE_QUOTA] = &gfs2_quota_glops,
601 [LM_TYPE_JOURNAL] = &gfs2_journal_glops,
602};
603